Container



atenlted dan.. 23, i923.

JOHN H. PROCTOIIR., F ANDOVER, MASSACHUSETTS, ASSTGNOB, TO THE PLYWOOD'TUBE TNC., OJE LAWRENCE, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

, CONTAINER.

Application filed March 16, 1922. Serial No. 544,164.A

To a?? umm 'it lmay concern y lie it known that l, JOHN H. Pnoo'ron, a citizen of the United States, residing at Andover, in the county of Essex and State of ll/lassachusetts, have invented certain new and useful lmprovementsin Containers, of which the following is a specification.

This invention relates to shipping containers more' particularly for shipping such ar ticles as dyes, chemicals, explosives, oysters, syrups, etc., for whichH a watertight containeris desirable.

lt may also be used for shipping such oily material as cream, butter, and lard, and for many other articles.

lts principal characteristics are that it can be cheaply made, and while very. light is exceedingly strong and impervious to water.

My container is of the Mcylindrical or barrel type. the principal feature being the c \'lin( lrical wall which is formed by Winding a plurality of sheets of wood veneer with endwise adjoining sections having their grain running at different angles spread with naterproof glue and Wound spirally under pressure. Such a cylindrical wall may be wound by hand on a mandrel, but preferably is machine wound and is held in position until the glue has set. The lheads or head are preferably also made of laminated ply wood, but may be made of other Inaterial. y

lu the drawings, Figure 1 is a plan of a table on which are a series of strips of veneer ready to be rolled up.

Fig. 2 is a perspective view of a cylinder formed of such strips.

Fig. 3 is a diagrammatic side elevation of a machine for rolling such cylinders from such strips.

Fig. 4 is a sectional elevation of a complete container of my preferred construction, sectional lines being omitted for clearness.

Fig. 5 is an elevation from the left end of Fig. 4, part of the head being broken to show Construction.

Fig. 6 is a detail, side elevation, of an alternative form of hoop.

Fig. .is a diagrammatic side elevation of another form of hoop.

Fig. 8 is a sectional detail showing another method of attaching a head to a barrel.

l prefer to form my cylindrical wall, in-

dicated at F, by laying down on a table such as shown in Fig. 1, end for end, adjoining sections of wood veneer, such as 10, 11, 12, 13 and 14, the endwise adjoining sections having their' grain running at different angles.

These may then be spread with glue, such as `27, and rolled up by hand preferably on a mandrel, butl foi-'practical purposes I roll up the sheet or strip or succession of sheets indicated by C on such a machine as shown in Fig. 3 to form cylinder F such as shown in Fig. 2.

ln application pending herewith, I claim the subject-matter of the tube as abo've described and as shown in Fig. 2.

ln this completed cylinder, the edge 8 of the starting sheet 14 is on the inside and the edge 9 of the tinishing sheet 10 may lap over another sheet, such as 11, in the finished cylinder. y

Preferably, l use a machine such as shown in F ig. 3 wherein the sheets C' are spread on a table A and are passed under the roll 26 which spreads upon them the waterproof glue indicated at 27. rlllhe sheets then run around a mandrel B about which they are conducted by an endless belt 21 which passes around pulleys 22, 23 and 24, partly around mandrel B under a pressure roller 29 upon ,which pressure is maintained as by a spring 20. The sheets C pass downbehind a guide plate and are rolled up in spiral form, the successive layers being hel-d together by a film of waterproof glue.

Preferably, for convenience adjoining sheets such as 12, 13 and l14 are attached together by adhesive tape 15 and 16 so that they will feed continuously but, as shown at 10, 11 and 12, the tapes may be omitted.

After forming a cylindrical wall, such as F or G shown in Figs. 4 and 5, each end is counterbored to form an annular shoulder 30 or 31. A

Preferably, each head 32 or 33 is formed of laminated ply wood, that is, of successive sheets of wood veneer held together byv lll@ These t closely inside the cylindrical wall, such as G, and outside each head, and are pressed in place with waterproof glue shown at 38 and 39. These hoops thus not only reinforce the ends interiorly but serve as annular supports when the container is rested on either head.

My cylindrical walls are so strong that no outside hoops are necessary, although they may be used it' it is desirable to protect the cylinders from wear in case they are to be rolled about.

While I prefer the type of ply wood hoops described, I may use ordinary barrel hoops. such as shown in Fig. 6, having their ends 40 and 41 overlapping. or, as shown in Fig. 7, I may form each hoop from a single strip of veneer,- such as 42, having the grain running all one way, Wound up in a spiral.

For some purposes Where strength of the cylindrical Wall is desired but neither lightness nor strength is necessary in the heads, I may, as shown in Fig. 8, use an ordinary wooden disc 43 held in position against a shoulder such as 3l by means of a nail or pin 44 driven through the wall G.

I claim:

l. In a shipping container, the combination of a cylindrical wall formed of a plurality of sheets ot' wood veneer with endwise adjoining sections having their grain running at different angles spread with waterproof glue and wound spirally under pressure havingr an annular shoulder near each end; with laminated ply wood heads pressed in place with waterproof glue against said shoulders; and retaining hoops pressed in place with waterprootl glue inside the cylindrical Wall and outside each head, said hoops being short cylinders of wood formed similar to the cylindrical wall.

2. In a shipping container, the combination of a cylindrical Wall formed ot' a plurality of sheets of wood veneer with endwise adjoining sections having their grain running at different angles spread with Waterproof` glue and wound spirally under pressure having an annular shoulC er near each end; with laminated ply wood heads pressed in place with waterproof glue against said shoulders; and retaining hoops pressed in place with waterproof glue inside the cylindrical wall and outside each head, said hoops being short cylinders of Wood.

In a shipping container, the combination of a cylindrical wall formed of a plurality of sheets of Wood veneer with endwise adjoining sections having their grain running at different angles spread with waterproof glue and wound spirally under pressure having an annular shoulder near each end; with laminated ply wood heads pressed in place with waterproof glue against said shoulders; and retaining hoops pressed in place with waterln'om" glue inside the cylindrical wall and outside each head.

l. In a shipping container. the combination of a cylindrical wall formed of a plurality of sheets of wood veneer with endwise adjoining sections having their grain running Aat different angles spread with waterproof glue and wound spirallynnder pressure having an annular shoulder near each end; with laminated ply wood heads pressed in place with waterproof glue against said shoulders: and means for retaining said heads in place.

In a shipping container. the eomhinaa cylindrical wall formed` oi' a plurality ot' sheets'of wood veneer with endwise adjoining sections having their grain running` at different angles spread with waterproolZ glue and wound spirallv under pressure having an annular shoulder near each end: with wood heads` pressed in place with waterproof glue against lsaid shoulders: and means for retaining said heads in place.

(i. In a shipping container. the eonihination ot' a eyliiulrieal wall l'orined of a plllrality of sheets ot' wood veneer with endwise adjoining sections having their grain running at different angles spread with waterproof glue and wound spirally under pressure having an annular shoulder near each end; with a wood head pressed in place with waterproof lglue against said shoulders: and nieans l'or retaining said head in place.

7. In a shipping container. the combination of a evlindrical wall l'orlned of a plurality of sheets of wood veneer with endwise adjoining sections having their grain ruiming at different angles spread with waterproof glue and wound spirally under pressure having au annular shoulder near each end; with a wood head and nieans for retaining said head in place. 

